I honestly have no clue what happened to that project. I’m tempted to say it’s been cancelled because…
They need to sell some more 777 Classics so they don’t lose $ on the
transition to the 777X. Boeing would want customers to buy new build
777 Classics to bridge the gap (As we’ve seen at the Paris Air Show
with EVA Air Cargo and Qatar Cargo)
Second-hand 777s haven’t been selling like hotcakes (Especially the old -200s and -300s) so even though this is just a guess, there may not be much market and $ for converting a used 777.
Boeing makes more money if they sell new frames versus converting them.
This last one is kind of stupid, but maybe it’s reason. The Boeing 777F has been selling marginally well and maybe they want to sell more to get the program more orders/increase the success of the program/overall 777 Classic/complete program?
Just some thoughts…